I don't know if your agreeing with me or not, but to repeat what I have already posted... Mites are difficult to see with the naked eye. They are nocturnal and do not live on the snake. What you may or may NOT see on the snake is not a guarantee there are no mites, not to mention mites do not lay eggs on the snake itself or even spend all of their time on snakes.
What you may see on the snake is only a small representation of what is actually living in your snakes enclosure and room.
Just tough it out, leave the snakes enclosure simple. Do not overuse any mite treatment, you can make your snake VERY SICK if you overuse any treatment.
Stop soaking him daily, use the RR only as directed, or you risk complications like neurological problems and death.